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Innovation
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Photo Research developed the first commercially available video photometer over
15 years ago. We are proud to introduce our newest and most advanced video photometer
- the PR-920 Digital Video Photometer (DVP). Our video photometers are being used
world-wide for applications ranging from FAA testing of radar screens to ISO certification
of information displays.
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Digital Precision
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The heart of the new PR-920 is a thermoelectrically cooled, 1024 x 1024 element
digital CCD camera which helps to make it the most accurate, sensitive and repeatable
video photometer in its class. Because the PR-920 detector consists of 1.048 million
pixels, superior spatial resolution is guaranteed.
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Hand Matched Filters
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In addition to the proprietary camera design, the detector response of each PR-920
is painstakingly matched to the CIE Vλ, (photopic) response by
our proprietary filter matching techniques that have been developed over the last
50 years. Our filter matching experience, combined with an individual calibration
of each and every detector element means that the PR-920 delivers the most accurate
measurement results of any commercially available video photometer. In addition
to the standard photopically matched filter, the PR-920 can be equipped with high-accuracy,
hand-matched CIE Tristimulus filters (option CFS- 302).
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Versatility
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The PR-920 is the only commercially available video photometer that utilizes a focusable
objective lens as standard equipment providing capability of addressing virtually
any application without changing lenses. System versatility is further enhanced
by 5 neutral density filters, giving the PR-920 the widest measuring range of any
video photometer available today.
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PR-920 Brochure